ApplicationComponent.kt

@Component(modules = [AssistedInjectModule::class])
@Singleton
interface ApplicationComponent {
    // ...
  
    @Component.Builder
    interface Builder {
        @BindsInstance
        fun application(application: Application): Builder
        fun build(): AppComponent
    }
  
    // Exposes the UserDetailModel.Factory object so we can reference the create()
    // method that takes a User ID String as an argument
    val userDetailViewModelFactory: UserDetailViewModel.Factory
}

// Module annotated with "@AssistedModule" that references generated code (AssistedInject_AssistedInjectModule::class)
@AssistedModule
@Module(includes = [AssistedInject_AssistedInjectModule::class])
interface AssistedInjectModule